A new option in sites' Advanced Settings tab, the ability to allow the crawler to check links with or without www.
Often, sites with many editors have a mix of link URLs for the same page; for example, a site could have links to both https://www.mysite.edu/contact_us and https://mysite.edu/contact_us. If the web server is configured to redirect the page from one to another, checking this box allows these domains to be considered as the same thing, so pages aren't duplicated in a site's inventory.
Learn more about all of the Advanced Settings for Sites.